Patents by Inventor Iku Metoki

Iku Metoki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5766830
    Abstract: A method for processing an exposed black and white silver halide photographic light-sensitive material includes the steps of: (1) developing the exposed light-sensitive material with a developing solution, (2) fixing the developed material with a fixing solution, (3) washing the fixed material with water which is replenished in an amount of from 0 to 3 liter/m.sup.2 of the exposed light-sensitive material, and (4) drying the washed material. The developing solution is replenished with a solid photographic composition. This solid photographic composition includes a developing agent selected from the group of a dihydroxybenzene developing agent represented by Formula I and a developing agent represented by Formula II (provided that the developing agent represented by Formula II may form a sodium salt, a potassium salt or a lithium salt). Formulae I and II are as follows: ##STR1## In the formulae, R.sub.1, R.sub.2, R.sub.3, and R.sub.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: June 16, 1998
    Assignee: Konica Corporation
    Inventors: Akira Shimizu, Shoji Nishio, Yasunori Wada, Iku Metoki
  • Patent number: 5238795
    Abstract: A light-sensitive silver halide photographic material is disclosed. The light-sensitive material comprises a support and two photographic layers each being provided on both sides, side A and side B, of the support and comprising a silver halide emulsion layer and a hydrophilic colloid layer wherein the light-sensitive material satisfies the relationship between sensitivities sA, sB and sA' thereof represented by the following expressions I and II, and an organic substance remained in the photographic layers after processing is an amount of not more than 90% by weight of the organic substance contained in the photographic layers before processing of the light-sensitive material;I: sA/sA'>4.0II: sA/sB=1.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: August 24, 1993
    Assignee: Konica Corporation
    Inventor: Iku Metoki
  • Patent number: 5153116
    Abstract: There is disclosed a silver halide photographic light-sensitive material comprising a support and provided thereon, at least one silver halide light-sensitive layer spectrally sensitized by adding a spectral sensitizing dye during at least one process selected from a grain formation process, a physical reopening process and a desalting process, wherein said light-sensitive material contains at least one selected from the compounds represented by following Formula A: ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an alkoxy group, an aryl group, a heterocyclic group, a carbamoyl group, a thiocarbamoyl group, and a sulfamoyl group; R.sub.2 and R.sub.3 represent independently a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aryl group, a cyano group, an alkylthio group, an arylthio group, an alkylsulfoxide group, an alkylsulfonyl group, and a heterocyclic group, provided that R.sub.2 and R.sub.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: October 6, 1992
    Assignee: Konica Corporation
    Inventors: Iku Metoki, Kiyoshi Sato
  • Patent number: 5148464
    Abstract: The improved apparatus for writing information on X-ray films comprising:means for exposing said X-ray films to write said information,means for identifying a type of said X-ray films, andmeans for adjusting an amount of exposure of said means for exposing in accordance with said means for identifying.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: September 15, 1992
    Assignee: Konica Corporation
    Inventor: Iku Metoki
  • Patent number: 4925783
    Abstract: Disclosed is a light-sensitive silver halide photographic material having at least one layer comprising a silver halide photographic emulsion, wherein the silver halide photographic emulsion is obtained by addition of a spectral sensitizing dye during the desalting step in obtaining the emulsion.According to the present invention, there can be obtained a highly sensitive light-sensitive material with little stain, good pressure blackening performance and yet great absorption of the dye.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: May 15, 1990
    Assignee: Konica Corporation
    Inventors: Iku Metoki, Chika Honda, Yasunori Wada
  • Patent number: 4801526
    Abstract: A silver halide photographic light-sensitive material comprising a specific silver halide grain is disclosed. The siliver halide grain contains a localized portion containing 20 mol % or more of silver iodide and average content of silver iodide of which grain is from 0.1 to 10.0 mol %, provided that the silver halide grain is prepared by mixing an aqueous solution containing a water soluble halide compound and an aqueous solution containing a water soluble silver salt under a condition that pAg of the mixture is raised at 9.7 or more during a period after a half amount of the silver salt to be used has been added to the mixture. The photographic light-sensitive material has improved photographic characteristics and is suitable for radiographic use.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: January 31, 1989
    Assignee: Konica Corporation
    Inventors: Eiji Yoshida, Akio Suzuki, Satoru Nagasaki, Masumi Arai, Iku Metoki, Haruhiko Sakuma
  • Patent number: 4689292
    Abstract: A silver halide photographic light-sensitive material having high sensitivity and high covering power, particularly suitable for use in radiography comprising on a support, a silver halide emulsion layer having silver halide grains which have a grain-size distribution curve comprising at least two peaks of which in the mode form, the highest peak mode and another peak mode adjacent thereto stand leaving a space of 0.10.mu. to 0.30.mu. therebetween. An orthochromatic dye-sensitizer increases the sensitivity.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: August 25, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Iku Metoki, Akio Suzuki, Eiji Yoshida, Kiyoshi Sato, Masumi Hosaka, Chika Honda
  • Patent number: 4659654
    Abstract: A silver halide photographic light-sensitive emulsion contains silver halide particles, chemically sensitized, the average concentration of the silver iodide of which is from 0.5 to 10 mole % and which have inside part wherein not less than 20 mole percent silver iodide is present locally; and at least one cyanine dyes having the Formulas [I], [II] and [III] as herein described.
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: April 21, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Iku Metoki, Akio Suzuki, Eiji Yoshida, Kiyoshi Sato, Masumi Hosaka